Inconel
A family of nickel-chromium superalloys for extreme temperature and corrosion environments. Inconel 625 (UNS N06625): weld overlay for valve trim, sour service, and seawater. Inconel 718: high-strength fasteners and stem material. Used where Hastelloy and 316SS are insufficient.
What is Inconel?
A family of nickel-chromium superalloys for extreme temperature and corrosion environments. Inconel 625 (UNS N06625): weld overlay for valve trim, sour service, and seawater
Vajra Industrial Solutions is an engineering-driven industrial valve manufacturer and supplier. Concepts such as inconel inform how we select, manufacture, and document valves for industrial service.
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Frequently Asked Questions
What is Inconel used for in industrial valves?
A family of nickel-chromium superalloys for extreme temperature and corrosion environments. Inconel 625 (UNS N06625): weld overlay for valve trim, sour service, and seawater. Inconel 718: high-strength fasteners and stem material. Used where Hastelloy and 316SS are insufficient.
When should I specify Inconel for valve body or trim?
Inconel is specified when the process fluid, temperature, or pressure requirements exceed what standard carbon steel (A216 WCB) or austenitic stainless steel (A351 CF8M) can handle. Material selection must consider corrosion rates, maximum and minimum design temperatures, and compliance with NACE MR0175 for sour service. Vajra Industrial Solutions can supply valves in Inconel with full mill certificates.
Is Inconel compatible with sour (H2S) service per NACE MR0175?
Material qualification for sour service (NACE MR0175 / ISO 15156) depends on the hardness limits, heat treatment condition, and UNS designation of the specific alloy. For H2S-containing service, the valve material order and PMI (positive material identification) must be verified against the applicable NACE material group. Contact Vajra Industrial Solutions for material recommendations specific to your H2S partial pressure and chloride conditions.
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